CN114124164A - Near-field interactive induction method and device - Google Patents
Near-field interactive induction method and device Download PDFInfo
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- CN114124164A CN114124164A CN202111553803.6A CN202111553803A CN114124164A CN 114124164 A CN114124164 A CN 114124164A CN 202111553803 A CN202111553803 A CN 202111553803A CN 114124164 A CN114124164 A CN 114124164A
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- 230000006698 induction Effects 0.000 title claims abstract description 52
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008054 signal transmission Effects 0.000 claims abstract description 13
- 230000003111 delayed effect Effects 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 21
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
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- 230000011664 signaling Effects 0.000 description 1
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- H04B5/70—
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- H04B5/48—
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- H04B5/72—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
Abstract
The invention discloses a near-field interactive induction method, which comprises the following steps: SA1, causing the signal transmission element to transmit a signal; SA2, detecting whether the receiving element receives the signal, if so, stopping the sending element from sending the signal; if not, repeatedly detecting until no signal is received for m times, and stopping the sending element from sending the signal; SA3 delayed for a period of time t 1; SA4, circularly executing steps SA 1-SA 3, wherein if the receiving elements receive signals in n continuous circles, the induction is successful, and a program with successful induction is executed, otherwise, the induction is failed; SA5 delayed for a period of time t 2; SA6, return to step SA 1; the invention adopts the mode of wave-by-wave feedback plus immediate stop of reception, so that the working time of the signal sending element can be shortest and the power consumption can be lowest.
Description
Technical Field
The invention relates to the technical field of induction, in particular to a near-field interactive induction method and a near-field interactive induction device.
Background
In public places, shared applications and even in families, multiple persons are inevitably required to share the same appliance, and bacteria transmission caused by contacting the same part of the same appliance successively is inevitable. Such as operating elevator buttons, operating faucets, operating light switches, operating hand sanitizer buttons, etc., especially during epidemic situations, such operations tend to increase the avenue for the spread of contagions among communities, becoming one of the concerns for public health.
The use of disposable isolation operation equipment is an effective measure for solving the problems, but the operation is complicated, the consumption is serious, and the environment is not protected; the problems can be solved by completing the operation by a specially-assigned person according to the password of the user, but a large amount of human resources are occupied, and the operation is inconvenient. Therefore, the non-contact operation function is added to the public appliance, which has great necessity and can effectively solve the problems.
The traditional non-contact operation mostly adopts the modes of light induction, pyroelectric induction, microwave induction and the like, wherein the cost of the pyroelectric induction and the microwave induction is higher, the volume is larger, and the light induction type design is preferred in the applications with limited volume and low cost.
In the conventional light sensing type design, frequency discrimination type sensing is mostly adopted, that is, light with a certain frequency is sent by a light emitting element, and if a signal with the same or similar frequency is recognized on a light receiving side, sensing is considered to be successful. The disadvantages of this approach are: 1. when the special frequency discrimination chip is used, the special frequency discrimination chip has certain anti-interference capability, but the circuit is complex and the cost is high; 2. when the programmable chip software is used for frequency discrimination, the anti-interference capability is poor; 3. when a plurality of induction units exist in a close range, misoperation and induction failure are easily caused; 4. in battery powered applications, the power consumption of frequency-discriminated sensing is relatively high.
Disclosure of Invention
The present invention is directed to a near-field interactive sensing device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a near field interactive induction method comprising the steps of:
SA1, causing the signal transmission element to transmit a signal;
SA2, detecting whether the receiving element receives the signal, if so, stopping the sending element from sending the signal; if not, repeatedly detecting until no signal is received for m times, and stopping the sending element from sending the signal;
SA3 delayed for a period of time t 1;
SA4, circularly executing steps SA 1-SA 3, wherein if the receiving elements receive signals in n continuous circles, the induction is successful, and a program with successful induction is executed, otherwise, the induction is failed;
SA5 delayed for a period of time t 2;
SA6, return to step SA 1.
As a further technical scheme of the invention: t2 is 0.
A method of near field interactive induction, comprising the steps of:
SB1, causing the signal transmission element to transmit a signal;
SB2, detecting whether the receiving element receives the signal, if so, stopping the sending element from sending the signal; if not, repeatedly detecting until no signal is received for m times, and stopping the sending element from sending the signal;
SB3, delaying for a period of time t 1;
SB4, circularly executing steps SB 1-SB 3, if no signal is received by the receiving element in the continuous n cycles, the induction is successful, and the induction successful program is executed, otherwise, the induction is failed;
SB5, delaying for a period of time t 2;
SB6, Return to step SB1
As a further technical scheme of the invention: t2 is 0.
A near-field interactive induction device comprises one or more signal transmitting elements and a driving circuit thereof, one or more signal receiving elements and a signal processing circuit thereof, and a microprocessor provided with specific software;
the specific software, for instructing the microprocessor to execute the program, according to the method of claim 1 or 3, drives the signal transmitting element to transmit the signal, and receives the signal output by the signal receiving element and the signal processing circuit thereof, thereby recognizing the sensing state.
As a further technical scheme of the invention: in the reflective near-field interactive induction device, the signal sending element and the signal receiving element are arranged in parallel or at an acute angle, and a signal sent by the signal sending element is reflected by a reflecting surface and then received by the signal receiving element; in the correlation type near-field interactive induction device, the signal sending element and the signal receiving element are oppositely arranged, and a signal sent by the signal sending element passes through a space and then is received by the receiving element.
As a further technical scheme of the invention: the driving circuit of the signal sending element is doubled by the output circuit of the IO port of the microprocessor, and/or the signal processing circuit of the signal receiving element is doubled by the input circuit of the IO port of the microprocessor.
As a further technical scheme of the invention: the number of the signal transmitting elements is smaller than that of the signal receiving elements.
As a further technical scheme of the invention: the signal transmitting element is an LED, and the signal receiving element is a light receiving diode, a light receiving triode, a photoresistor and a photocell, wherein the characteristic wavelength of the light receiving diode corresponds to that of the LED.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts a mode of wave-by-wave feedback plus receiving and stopping, namely: after the microprocessor starts the signal sending element to send signals each time, the microprocessor immediately detects whether the receiving element receives the signals, and immediately stops sending the signals after detecting the signals. The design can make the working time of the signal transmitting element shortest and the power consumption lowest.
Drawings
FIG. 1 is a flow chart of the steps of a reflective near-field interactive induction method;
FIG. 2 is a flow chart of the steps of a correlation near field interactive induction method;
FIG. 3 is a signal transfer schematic diagram of a single reflective near-field interactive sensing unit;
FIG. 4 is a signal transmission schematic diagram of a single correlation near-field interactive sensing unit;
FIG. 5 is a signal transmission diagram of a plurality of reflective near-field interactive sensing units;
FIG. 6 is a functional block diagram of a single unit near field interactive sensory device;
FIG. 7 is a schematic diagram of the driving and signal processing of a single element near field interactive sensing device;
FIG. 8 is a simplified schematic diagram of the driving and signal processing of a single-element near-field interactive sensing device.
In the figure, a signal transmitting element-1, a signal receiving element-2, a signal transmitting direction-3, a reflecting direction-4, a finger-5, a signal receiving element I-21, a signal receiving element II-22, a signal receiving element III-23 and a signal receiving element IV-24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, example 1: compared with the traditional frequency discrimination induction technology, the near-field interactive induction method provided by the application adopts a wave-by-wave feedback + receiving-stopping mode, namely: after the microprocessor starts the signal sending element to send signals each time, the microprocessor immediately detects whether the receiving element receives the signals, and immediately stops sending the signals after detecting the signals. The design can make the working time of the signal transmitting element shortest and the power consumption lowest.
Adjusting the delay times t1 and t2, and/or adjusting the number m and n of detection cycles, the duty cycle of the signaling element, and/or the number of acknowledgements, can be adjusted, thereby adjusting the frequency of detection of operation, i.e., the speed of response of the microprocessor to operation. Compared with the control flexibility, the method is incomparable with the traditional frequency discrimination induction technology.
Therefore, the method uses a wave-by-wave feedback mode, and the sensing success is judged only by continuously detecting the sensing signal for multiple times, so the method has the advantages of lowest power consumption, stronger anti-interference capability, extremely high response speed by adjusting the delay time t1 and t2 and/or the cycle detection times m and n, and is suitable for the application of rapid and continuous operation.
As a limit, the fastest response speed can be obtained by making the delay time t2=0 after the detection of the wave-by-wave detection signal, i.e., canceling the delay.
A near-field interactive induction device is characterized by comprising a signal sending element and a driving circuit thereof, a signal receiving element and a signal processing circuit thereof, a microprocessor provided with specific software and the like.
The specific software is used for commanding the microprocessor to execute a program, driving the signal sending element to send a signal according to the method, and receiving the signal output by the signal receiving element and the signal processing circuit thereof, so as to identify the induction state.
In reflective near field interactive sensing applications, the signal transmitted by the transmitting element is reflected by an operator (e.g., a finger) and returned to the receiving surface of the receiving element. When the operation is not carried out, the signal sent by the transmitting element is not reflected by the operation object, so that the receiving element can not receive the signal; when the operation occurs, the signal sent by the transmitting element can be reflected by the operation object and then returned to the receiving surface of the receiving element, and the signal receiving element and the signal processing circuit thereof transmit the signal of the received signal to the microprocessor, and the signal is identified as the operation by the microprocessor. Thus, in reflective near field interactive sensing applications, the transmitting element and the receiving element are typically mounted in parallel, or at an acute angle.
In a correlation near field interactive induction application, the signal transmitted by the transmitting element may be transmitted directly to the receiving surface of the receiving element. When the receiving element is not operated, the signal sent by the transmitting element is directly transmitted to the receiving surface of the receiving element, so that the receiving element can receive the signal wave by wave; when the operation occurs, an operation object (such as a finger) is inserted into a signal transmission channel between the transmitting element and the receiving element to block a signal transmission channel, so that a signal sent by the transmitting element cannot be transmitted to a receiving surface of the receiving element, and the signal receiving element and a signal processing circuit thereof transmit a signal of 'no signal received' to the microprocessor, and the signal is judged to be 'operated' after being identified by the microprocessor. Thus, in a correlation near field interactive induction application, the transmitting element and the receiving element are typically mounted opposite each other.
The above is a single near-field interactive sensing element solution.
In the case of a plurality of near-field interactive sensing units, one or more transmitting elements and their driving circuits, a plurality of signal receiving elements and their signal processing circuits, and the like are connected to the same microprocessor in which specific software is installed.
Specific software for instructing a microprocessor to execute a program, according to the method of claim 1 and/or using the method of claim 2, to drive each signal transmitting element to transmit a signal, and to receive a signal output by a corresponding signal receiving element and a signal processing circuit thereof, so as to identify a sensing state of a corresponding sensing assembly.
This is an application where multiple near field interactive sensing elements are recognized by the same microprocessor.
The same transmitting element can be matched with a plurality of receiving elements, namely, the signal transmitted by the same transmitting element can be reflected to the plurality of receiving elements through an operation object (such as a finger), or the channel transmitted to the plurality of receiving elements is blocked through the operation object, and the microprocessor identifies the operated area according to the output signals of each receiving element and the signal processing circuit thereof, so as to output corresponding response.
The signal transmission of a single correlation near-field interactive sensing unit is shown in fig. 4, in which: the signal transmitting element 1 and the signal receiving element 2 are installed in opposite directions, the signal transmitting element 1 transmits signals along the direction 3 under the driving of a microprocessor and a driver, if a finger 5 appears in an area between the signal transmitting element 1 and the signal receiving element 2, the signals transmitted along the direction 3 by the signal transmitting element 1 are intercepted by the finger 5, the signal receiving element 2 cannot receive the signals, otherwise, the signal receiving element 2 can receive the signals and cause the response of the signal receiving element 2, and the signals are fed back to the microprocessor after passing through a signal processing circuit and are identified as 'no operation' by the microprocessor; otherwise, the microprocessor considers "operational".
Signal transmission of a plurality of reflective near-field interactive sensing units is shown in fig. 5, a single signal transmitting element 1 is installed among a plurality of signal receiving elements 21, 22, 23 and 24, when a finger is in a region "governed" by the signal transmitting element 1 and the signal receiving element 24, a signal transmitted by the signal transmitting element 1 along the direction 3 is reflected to a receiving end face of the signal receiving element 24 along the direction 4 after encountering the reflection of the finger 5, and is recognized as "the unit 4 is operated" by a microprocessor; similarly, the presence of a finger 5 in the area "under jurisdiction" of the signal emitting element 1 and the signal receiving element 21 is recognized by the microprocessor as "unit 1 is operational", and so on.
Taking photo sensing as an example, fig. 7 is a schematic diagram of driving and signal processing of a single-unit near-field interactive sensing device, in which a left-side dashed box is a light driving circuit, and a right-side dashed box is a light signal processing circuit.
In the optical driving circuit, DO1 is a control terminal for transmitting signals and is connected to a digital output pin of the microprocessor, and DI1 is a detection terminal for receiving signals and is connected to a digital input pin of the microprocessor. When the light signal needs to be emitted, the microprocessor sets the DO1 terminal to be at a high level, and after passing through the current-limiting resistor R1, the transistor T1 is turned on, the light-emitting element LED1 is turned on, and emits the light signal outwards, wherein R2 is the current-limiting resistor of the LED 1.
In the optical signal processing circuit, after receiving an optical signal of the LED1, the phototransistor OP1 increases the collector current, the current flows through the phototransistor OP1 and the resistor R3 via the power supply VCC, the voltage drop on the resistor R3 increases, the voltage is divided by the resistors R4 and R5, the divided voltage exceeds the base conducting voltage of the triode T2, the base current is generated to conduct the triode T2, the base voltage collector is reduced, the base current is connected to the input pin of the microprocessor via the pin DI1, and the low level is recognized by the microprocessor. On the contrary, when the photo transistor OP1 receives the optical signal of the LED1, the collector current of the OP1 is low, and the voltage drop across the R3 is divided by the R4 and the R5, which is not enough to turn on the transistor T2, and the voltage of the DI1 received by the microprocessor is high.
Therefore, the near-field interactive sensing device completes signal transmission under the control of the microprocessor, and feeds back the processed signals to the microprocessor.
Further, in the case where the use conditions are not so complicated, the low-cost scheme shown in fig. 8 may be employed. In the modified scheme, the signal driving function is assumed by a driving circuit inside a digital output pin of a microprocessor (most of the current microprocessors have output current of more than 10mA and are enough to drive an LED), and a signal processing circuit is assumed by an input circuit inside a digital input pin of the microprocessor to complete level discrimination.
In photo sensing applications, the light emitting element includes, but is not limited to, a light emitting element such as a visible light LED, an infrared LED, an OLED, etc., and the light receiving element includes, but is not limited to, a photoresistor, a photodiode, a phototriode, etc.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A near field interactive induction method, comprising the steps of:
SA1, causing the signal transmission element to transmit a signal;
SA2, detecting whether the receiving element receives the signal, if so, stopping the sending element from sending the signal; if not, repeatedly detecting until no signal is received for m times, and stopping the sending element from sending the signal;
SA3 delayed for a period of time t 1;
SA4, circularly executing steps SA 1-SA 3, wherein if the receiving elements receive signals in n continuous circles, the induction is successful, and a program with successful induction is executed, otherwise, the induction is failed;
SA5 delayed for a period of time t 2;
SA6, return to step SA 1.
2. A near field interactive induction device according to claim 1, characterised in that t2 is 0.
3. A method of near-field interactive sensing, comprising the steps of:
SB1, causing the signal transmission element to transmit a signal;
SB2, detecting whether the receiving element receives the signal, if so, stopping the sending element from sending the signal; if not, repeatedly detecting until no signal is received for m times, and stopping the sending element from sending the signal;
SB3, delaying for a period of time t 1;
SB4, circularly executing steps SB 1-SB 3, if no signal is received by the receiving element in the continuous n cycles, the induction is successful, and the induction successful program is executed, otherwise, the induction is failed;
SB5, delaying for a period of time t 2;
SB6, return to step SB 1.
4. A near field interactive induction device according to claim 3, characterised in that t2 is 0.
5. A near-field interactive induction device is characterized by comprising one or more signal sending elements and a driving circuit thereof, one or more signal receiving elements and a signal processing circuit thereof, and a microprocessor provided with specific software;
the specific software, for instructing the microprocessor to execute the program, according to the method of claim 1 or 3, drives the signal transmitting element to transmit the signal, and receives the signal output by the signal receiving element and the signal processing circuit thereof, thereby recognizing the sensing state.
6. A near-field interactive induction device according to claim 5, characterized in that in the reflective near-field interactive induction device, the signal transmitting element and the signal receiving element are installed in parallel or at an acute angle, and the signal transmitted by the signal transmitting element is reflected by the reflecting surface and then received by the signal receiving element; in the correlation type near-field interactive induction device, the signal sending element and the signal receiving element are oppositely arranged, and a signal sent by the signal sending element passes through a space and then is received by the receiving element.
7. A near field interactive sensing device according to claim 6, wherein the driving circuit of the signal transmitting element is doubled by the output circuit of the IO port of the microprocessor, and/or the signal processing circuit of the signal receiving element is doubled by the input circuit of the IO port of the microprocessor.
8. A near field interactive induction device according to claim 7, characterised in that the number of signal transmitting elements is smaller than the number of signal receiving elements.
9. A near-field interactive induction device according to claim 5, characterized in that said signal transmitting element is an LED and said signal receiving element is a light receiving diode, a light receiving triode, a photoresistor, a photocell with a characteristic wavelength corresponding to said LED.
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| CN202111553803.6A CN114124164B (en) | 2021-12-17 | 2021-12-17 | Near field interactive induction method and device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122363A (en) * | 2010-06-08 | 2011-07-13 | 成都西谷曙光数字技术有限公司 | Interactive electronic tag technology-based anti-collision method |
| CN106788873A (en) * | 2016-12-23 | 2017-05-31 | 成都赫尔墨斯科技有限公司 | A kind of unmanned plane interference method and system |
| US20190238239A1 (en) * | 2018-01-31 | 2019-08-01 | U-Blox Ag | Methods and apparatus for duplexing signals |
| US20200343772A1 (en) * | 2019-04-24 | 2020-10-29 | Canon Kabushiki Kaisha | Power transmission apparatus, control method executed by power transmission apparatus, and storage medium |
| CN111953388A (en) * | 2020-10-19 | 2020-11-17 | 深圳市力博得科技有限公司 | Control method, system, device and medium for preventing near field transmission misidentification |
| CN113258961A (en) * | 2021-05-12 | 2021-08-13 | 北京布莱迪测控仪表有限公司 | Wireless charging method, receiver and transmitter |
| US20210271833A1 (en) * | 2018-08-24 | 2021-09-02 | Sony Corporation | Tag device in wireless communication system, electronic device, communication method, and storage medium |
-
2021
- 2021-12-17 CN CN202111553803.6A patent/CN114124164B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122363A (en) * | 2010-06-08 | 2011-07-13 | 成都西谷曙光数字技术有限公司 | Interactive electronic tag technology-based anti-collision method |
| CN106788873A (en) * | 2016-12-23 | 2017-05-31 | 成都赫尔墨斯科技有限公司 | A kind of unmanned plane interference method and system |
| US20190238239A1 (en) * | 2018-01-31 | 2019-08-01 | U-Blox Ag | Methods and apparatus for duplexing signals |
| US20210271833A1 (en) * | 2018-08-24 | 2021-09-02 | Sony Corporation | Tag device in wireless communication system, electronic device, communication method, and storage medium |
| US20200343772A1 (en) * | 2019-04-24 | 2020-10-29 | Canon Kabushiki Kaisha | Power transmission apparatus, control method executed by power transmission apparatus, and storage medium |
| CN111953388A (en) * | 2020-10-19 | 2020-11-17 | 深圳市力博得科技有限公司 | Control method, system, device and medium for preventing near field transmission misidentification |
| CN113258961A (en) * | 2021-05-12 | 2021-08-13 | 北京布莱迪测控仪表有限公司 | Wireless charging method, receiver and transmitter |
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